Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS5914815 A
Publication typeGrant
Application numberUS 08/921,160
Publication date22 Jun 1999
Filing date29 Aug 1997
Priority date29 Aug 1997
Fee statusLapsed
Publication number08921160, 921160, US 5914815 A, US 5914815A, US-A-5914815, US5914815 A, US5914815A
InventorsBrent J. Bos
Original AssigneeDonnelly Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Optical rearview system for vehicle
US 5914815 A
Abstract
An optical rearview system for a vehicle includes a reflective element which reflects light incident thereon and at least one diffraction grating in the path of light from an object rearward of the vehicle towards the reflective element. The at least one diffraction grating diffracts light from the object wherein light passing through the diffraction grating is directed towards the reflective element. Such optical rearview system eliminates secondary reflections and flare which have precluded successful commercialization of previously known optical rearview systems.
Images(2)
Previous page
Next page
Claims(16)
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An optical rearview system for a vehicle, comprising:
a reflective element which reflects light incident thereon; and
at least one diffraction grating for cooperating to produce an image of an object rearward of the vehicle substantially without flare in the form of a spread or smear of light superimposed thereon, said at least one diffraction grating being in the path of light from an object rearward of the vehicle towards the reflective element,
said at least one diffraction grating diffracting light from the object wherein light passing through the at least one diffraction grating is directed towards the reflective element.
2. The optical rearview system in claim 1 wherein said at least one diffraction grating includes two diffraction gratings, one of said diffraction gratings for compensating chromatic aberrations introduced by the other of said diffraction gratings.
3. The optical rearview system in claim 2 wherein said two diffraction gratings are both in the path of light from an object rearward of the vehicle towards the reflective element.
4. The optical rearview system in claim 2 wherein each of said diffraction gratings is a blazed diffraction grating.
5. The optical rearview system in claim 2 wherein each said diffraction grating is made up of a series of parallel grooves periodically spaced apart in order to diffract light passing through said diffraction grating, wherein said grooves are spaced apart in the range of between approximately 0.5 micrometers and approximately 40 micrometers.
6. The optical rearview system in claim 5 wherein said grooves are spaced apart in the range of between approximately 1 micrometer and approximately 10 micrometers.
7. The optical rearview system in claim 1 wherein said at least one diffractive grating is a blazed diffractive grating.
8. The optical rearview system in claim 7 wherein said at least one diffraction grating is made up of a series of parallel grooves periodically spaced apart in order to diffract light passing through said diffractive grating, wherein said grooves are spaced apart in the range of between approximately 0.5 micrometers and approximately 40 micrometers.
9. The optical rearview system in claim 8 wherein said grooves are spaced apart in the range of between approximately 1 micrometer and approximately 10 micrometers.
10. An optical rearview system for a vehicle, comprising:
a reflective element which reflects light incident thereon positioned forward of the vehicle driver; and
first and second transmission optical elements for diffracting light passing through that optical element into substantially a single order of light, and for cooperating to produce an image of an object rearward of the vehicle substantially without flare in the form of a spread or smear of light superimposed thereon;
said first optical element being in the path of light from an object rearward of the vehicle towards the reflective element wherein light passing through said first optical element is directed towards the reflective element;
said second optical element compensating chromatic aberrations introduced by the first optical element.
11. The optical rearview system in claim 10 wherein said second optical element is in the path of light from an object rearward of the vehicle towards the reflective element.
12. The optical rearview system in claim 10 wherein each of said optical elements is a blazed diffraction grating.
13. The optical rearview system in claim 12 wherein each of said optical elements is made up of a series of parallel grooves periodically spaced apart in order to refract and diffract light passing through that optical element, wherein said grooves are spaced apart in the range of between approximately 0.5 micrometers and approximately 40 micrometers.
14. The optical rearview system in claim 13 wherein said grooves are spaced apart in the range of between approximately 1 micrometer and approximately 10 micrometers.
15. The optical rearview system in claim 10 wherein each of said optical elements is made up of a series of parallel grooves periodically spaced apart in order to refract and diffract light passing through that optical element, wherein said grooves are spaced apart in the range of between approximately 0.5 micrometers and approximately 40 micrometers.
16. The optical rearview system in claim 15 wherein said grooves are spaced apart in the range of between approximately 1 micrometer and approximately 10 micrometers.
Description
BACKGROUND OF THE INVENTION

This invention relates generally to vehicle rear vision systems and, in particular, to a rear vision system made up of optical elements.

In U.S. Pat. Nos. 5,594,593 and 5,617,245 issued to Peter J. Milner, the disclosures of which are hereby incorporated herein by reference, an optical rearview unit for a vehicle is disclosed which substantially reduces protrusions beyond the exterior surface of the vehicle, as compared with existing exterior rearview mirrors, while providing with rearward and lateral fields of view of the vehicle. The optical system spans the body line of the vehicle so that only the outer surface of an objective refractor lies outside the body line. This minimizes the projection of the rearview system laterally of the vehicle and, at the same time, brings the image position inboard so that the observer does not have to divert his, or her, line of sight so far from the straight-ahead position in order to view the image presented by the rearview system as is currently the case with conventional exterior door-mounted rearview mirrors. This is accomplished in the Milner patents by a first refractor optical element which is positioned in the path of light from objects to the rear of the vehicle passing through the refractor element to a reflector member from which the light is reflected towards the driver. A second refractor element is provided for compensating chromatic aberrations introduced into the viewing system by the first refractor element.

While the Milner optical rearview system provides significant advantages over conventional exterior rearview mirrors, several problems have precluded successful commercial utilization of the Milner mirror. In one embodiment of the Milner mirror, one, or both, refractor element is a wedge. The difficulty with the use of the wedge optical element is the production of secondary reflections, such as objects within the passenger compartment which are reflected back into the eyes of the driver. Various attempts have been made at overcoming such secondary reflections including the application of anti-reflection coatings to the optical element. However, even anti-reflective coatings have proven inadequate to satisfactorily overcome such secondary reflections. One possible improvement to overcoming secondary reflections is to replace the wedge with a Fresnel prism. The Fresnel prism effectively divides the wedge into a series of individual prismatic mini-elements. In addition to providing an improvement to secondary reflections, the Fresnel prism is advantageous because it may be made from a plastic material rather than glass and provides more flexibility in system design thereby reducing interference with vehicle body configuration.

However, the Fresnel prism itself introduces additional undesirable consequences in the design of an optical rearview system. One such undesirable consequence is the production of "flare" which is a spread or smear of light superimposed over a normal image especially in high contrast conditions such as those occurring at night. Such smear of light is believed to originate from a location outside of the field of view of the rearview system, such as from the side of the vehicle. It is believed that flare results from light sources outside of the field of view of the system contacting the draft surfaces defined by the transition from one Fresnel prismatic mini-element to the next mini-element. Because the eyes of the driver tend to be adapted to low lighting conditions, which is the condition in which such flare often occurs, the presence of an aberration in the form of a spread, or smear, of light superimposed over the normal image is exceptionally undesirable and annoying.

SUMMARY OF THE INVENTION

The present invention provides an improvement to the Milner mirror in a manner which avoids the difficulties which heretofore have prevented successful commercialization of the Milner mirror.

An optical rearview system for a vehicle according to the invention includes a reflective element which reflects light incident thereon and at least one diffraction grating. The diffraction grating is in the path of light from an object rearward of the vehicle towards the reflective element. The diffraction grating diffracts light from the object such that light passing through the diffraction grating is directed towards the reflective element.

In a preferred embodiment, an optical rearview mirror system includes first and second transmission optical elements. Each of the optical elements diffracts and directs light passing through that optical element into substantially a single order of light. The first optical element is positioned in the path of light from an object rearward of the vehicle towards a reflective element. In this manner, light passing through the first optical element is directed towards the reflective element. The second optical element is for compensating chromatic aberrations introduced by the first optical element.

Diffraction gratings operate on a different principle from refractive prisms. Diffraction gratings utilize a series of parallel grooves that are spaced apart a distance that is the same order of magnitude as the wavelength of light transmitted therethrough. The diffraction grating bends light passing therethrough and thereby achieves the same result as the refraction optical element in the Milner mirror patents, but does not suffer the difficulties set forth above. This is believed to be the result of the absence of draft surfaces of substantial size as known to be present with refraction elements.

Preferably, each optical element is a blazed diffraction grating. A blazed diffraction grating utilizes diffraction to direct substantially all light being transmitted therethrough into a single order which is typically either the -1 or +1 order. By directing substantially all of the light being transmitted therethrough into a single order, the blazed diffraction grating is exceptionally efficient. However, other types of diffraction gratings may be utilized.

These and other objects, advantages and features of this invention will become apparent upon review of the following specification in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a side of a vehicle equipped with an optical rearview system according to the invention;

FIG. 2 is a perspective view of the interior of the vehicle in FIG. 1 from a position viewed by the driver of the vehicle of the optical rearview system; and

FIG. 3 is a schematic diagram of an optical rearview mirror system according to the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring now specifically to the drawings, and the illustrative embodiments depicted therein, optical rearview mirror system 20, as illustrated in FIGS. 1 and 2, includes an outer portion surrounded by a cowling 26 which extends beyond the door 27 of vehicle 22 and may be positioned below a windowpane 30. An objective optical element 24, which is a diffraction grating element, is positioned within cowling 26 external of the vehicle. A reflective element 25 extends within the interior of the vehicle and is positioned in door 27. Because of this arrangement, optical rearview system 20 protrudes outwardly beyond the outer surface of door 27 substantially less than the conventional exterior rearview mirror, while the image produced at reflective element 25 protrudes within the interior compartment of the vehicle, where the image is more readily observed by eyes 29 of the driver.

Objective diffraction optical element 24 of optical rearview mirror system 20 is positioned in the path of light rays 32 projected from an object (not shown) located to the rear and side of the vehicle 22 (FIG. 3). Objective diffraction optical element 24 redirects rays 32 into redirected rays 34. A second diffraction optical element 28 is a compensating diffraction optical element which compensates for chromatic aberrations introduced into the system by objective optical element 24. Chromatic-compensated rays 36 emanating from compensating diffraction optical element 28 are reflected by reflective element 25 and the reflective rays 38 are observed by the eyes 29 of the driver. Because both optical elements 24 and 28 are positioned in the optical path between the object rearward of the vehicle and reflective element 25, the illustrated optical rearview system 20 is a double-objective optical system. However, it should be understood that compensating diffraction optical element 28 may be in the path of light from the reflector to the drive or in any other arrangement as illustrated in the above-mentioned Milner patents. It should be understood that reflective element 25 can be selectively positioned either manually or utilizing drive motors about both vertical and horizontal axes in order to provide adjustment to suit the size and seat position of the drive utilizing conventional techniques such as a dual-axis motorized mirror actuator.

Optical elements 24 and 28 are transmission diffraction gratings. As is known in the art, such diffraction gratings redirect light from its optical path because a series of parallel grooves are spaced apart on the order of magnitude of the wavelength of the light being transmitted therethrough. A pure diffraction grating produces diffracted light having primarily three spectral orders including the 0 order, the +1 order and the -1 order. However, a blazed, or triangular tooth, diffraction transmission grating utilizes both refraction and diffraction to redirect the light into a single order; namely, the +1 or -1 order. Because all of the light is directed into a single order, a blazed diffraction grating is more efficient and more preferred to other types of diffraction gratings. In the illustrated embodiment, optical elements 24 and 28 may be blazed diffraction transmission gratings of the type provided by Richardson Grating Laboratory. Other diffraction gratings may be used, such as holographic, or the like. In order to provide satisfactory operation, the parallel grooves which define the diffraction grating are preferably separated with a distance that is greater than approximately 0.5 micrometers and less than approximately 40 micrometers although other separation distances may have the desired effect. Most preferably, the separation between the grooves is in the range of between approximately 1 micrometer and approximately 10 micrometers.

Although the invention is illustrated utilizing a separate second compensating diffraction optical element, it may be possible to combine the chromatic compensating function of the second optical element into the first optical element and thereby eliminate the need for a second optical element. This may be accomplished by applying the diffraction grating to the first surface and/or the second surface of the single objective diffraction optical element and providing optical magnification to the element by providing curvature to one or more of the surfaces of the optical element. The ability to carry out the invention utilizing a single optical element would provide a significant reduction in cost and complexity as would be apparent to the skilled artisan.

A diffraction grating according to the invention can be formed out of a plastic material such as polycarbonate or the like. The diffraction grating can be made according to the principles disclosed in commonly assigned U.S. Pat. No. 5,538,674 issued to Jon Nisper for a METHOD FOR REPRODUCING HOLOGRAMS, KINOFORMS, DIFFRACTIVE OPTICAL ELEMENTS AND MICROSTRUCTURES, the disclosure of which is hereby incorporated herein by reference.

By providing a diffraction grating in an optical rearview system, the present invention produces a crisp and clear image of objects to the rear and side of the vehicle without aberrations which have precluded previous commercialization of such systems even in high contrast, low light conditions. This is accomplished in a manner which does not add additional optical elements to the system and which does not require significantly more expensive components than previously proposed. Accordingly, the present invention provides a useful advance in the art.

Changes and modifications in the specifically described embodiments can be carried out without departing from the principles of the invention, which is intended to be limited only by the scope of the appended claims, as interpreted according to the principles of patent law including the doctrine of equivalents.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3441335 *1 Jun 196429 Apr 1969Donnelly Mirrors IncPeriscopic rearview system
US3809462 *25 Jul 19727 May 1974Donnelly Mirrors IncView expanding and directing optical system
US4988152 *6 Jan 198729 Jan 1991Hughes Aircraft CompanyHolographic rearview mirror and method of producing same
US5278695 *4 Oct 199111 Jan 1994Blue Sky Research, Inc.Magnifier
US5559640 *29 Mar 199524 Sep 1996Rockwell International CorporationAutomotive rear view mirror system
US5594593 *16 Sep 199314 Jan 1997Milner; Peter J.Rear view system for a vehicle
US5617245 *10 Apr 19921 Apr 1997Milner; Peter J.Rear view mirror unit
EP0283467A1 *14 Mar 198821 Sep 1988Hans-Dieter KlammerSide mirror for motor vehicles
GB2263453A * Title not available
Non-Patent Citations
Reference
1G. J. Swanson, "Binary Optics Technology: The Theory and Design of Multi-Level Diffractive Optical Elements", Technical Report 854, M.I.T. Lincoln Laboratory, Lexington, MASS., pp. 1-47, Aug. 1989.
2 *G. J. Swanson, Binary Optics Technology: The Theory and Design of Multi Level Diffractive Optical Elements , Technical Report 854, M.I.T. Lincoln Laboratory, Lexington, MASS., pp. 1 47, Aug. 1989.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6424474 *20 Feb 199823 Jul 2002Bending Light Ltd.Optical rear view system
US669026826 Feb 200110 Feb 2004Donnelly CorporationVideo mirror systems incorporating an accessory module
US684748722 Aug 200225 Jan 2005Donnelly CorporationVehicle information display
US700597418 Apr 200328 Feb 2006Donnelly CorporationVehicle imaging system
US704644821 Jan 200516 May 2006Donnelly CorporationVehicle information display
US719538122 Jan 200227 Mar 2007Donnelly CorporationVehicle interior LED lighting system
US726565624 Feb 20064 Sep 2007Donnelly CorporationVehicle imaging system
US734428417 Jan 200718 Mar 2008Donnelly CorporationLighting system for a vehicle, with high-intensity power LED
US766757919 Dec 200823 Feb 2010Donnelly CorporationInterior mirror system
US769702731 Jul 200213 Apr 2010Donnelly CorporationVehicular video system
US771147917 Mar 20094 May 2010Donnelly CorporationRearview assembly with display
US772872124 Nov 20081 Jun 2010Donnelly CorporationAccessory system suitable for use in a vehicle
US77314036 Mar 20088 Jun 2010Donnelly CorpoationLighting system for a vehicle, with high-intensity power LED
US77710611 Apr 200810 Aug 2010Donnelly CorporationDisplay mirror assembly suitable for use in a vehicle
US779232927 Oct 20097 Sep 2010Donnelly CorporationImaging system for vehicle
US781532623 Apr 201019 Oct 2010Donnelly CorporationInterior rearview mirror system
US78216979 Nov 200926 Oct 2010Donnelly CorporationExterior reflective mirror element for a vehicular rearview mirror assembly
US782254316 Mar 201026 Oct 2010Donnelly CorporationVideo display system for vehicle
US78261232 Jun 20092 Nov 2010Donnelly CorporationVehicular interior electrochromic rearview mirror assembly
US783288226 Jan 201016 Nov 2010Donnelly CorporationInformation mirror system
US785575531 Oct 200621 Dec 2010Donnelly CorporationInterior rearview mirror assembly with display
US78597378 Sep 200928 Dec 2010Donnelly CorporationInterior rearview mirror system for a vehicle
US786439919 Mar 20104 Jan 2011Donnelly CorporationReflective mirror assembly
US787116910 Nov 200818 Jan 2011Donnelly CorporationVehicular signal mirror
US787318716 Aug 201018 Jan 2011Donnelly CorporationDriver assistance system for vehicle
US788862918 May 200915 Feb 2011Donnelly CorporationVehicular accessory mounting system with a forwardly-viewing camera
US789839819 Jan 20101 Mar 2011Donnelly CorporationInterior mirror system
US789871916 Oct 20091 Mar 2011Donnelly CorporationRearview mirror assembly for vehicle
US790675623 Apr 201015 Mar 2011Donnelly CorporationVehicle rearview mirror system
US791418811 Dec 200929 Mar 2011Donnelly CorporationInterior rearview mirror system for a vehicle
US791600921 Apr 201029 Mar 2011Donnelly CorporationAccessory mounting system suitable for use in a vehicle
US791857015 Nov 20105 Apr 2011Donnelly CorporationVehicular interior rearview information mirror system
US79269607 Dec 200919 Apr 2011Donnelly CorporationInterior rearview mirror system for vehicle
US794915228 Dec 201024 May 2011Donnelly CorporationDriver assistance system for vehicle
US799447114 Feb 20119 Aug 2011Donnelly CorporationInterior rearview mirror system with forwardly-viewing camera
US800089420 Oct 201016 Aug 2011Donnelly CorporationVehicular wireless communication system
US801950514 Jan 201113 Sep 2011Donnelly CorporationVehicle information display
US80447766 Aug 200925 Oct 2011Donnelly CorporationRear vision system for vehicle
US804766728 Mar 20111 Nov 2011Donnelly CorporationVehicular interior rearview mirror system
US804964025 Feb 20111 Nov 2011Donnelly CorporationMirror assembly for vehicle
US806375324 Feb 201122 Nov 2011Donnelly CorporationInterior rearview mirror system
US807033229 Mar 20116 Dec 2011Magna Electronics Inc.Automatic lighting system with adaptive function
US807231830 Oct 20096 Dec 2011Donnelly CorporationVideo mirror system for vehicle
US808338628 Aug 200927 Dec 2011Donnelly CorporationInterior rearview mirror assembly with display device
US809015313 May 20113 Jan 2012Donnelly CorporationImaging system for vehicle
US80940023 Mar 201110 Jan 2012Donnelly CorporationInterior rearview mirror system
US809526012 Sep 201110 Jan 2012Donnelly CorporationVehicle information display
US80953102 Apr 200810 Jan 2012Donnelly CorporationVideo mirror system for a vehicle
US810056824 Mar 201124 Jan 2012Donnelly CorporationInterior rearview mirror system for a vehicle
US81063471 Mar 201131 Jan 2012Donnelly CorporationVehicle rearview mirror system
US812178715 Aug 201121 Feb 2012Donnelly CorporationVehicular video mirror system
US813411727 Jul 201113 Mar 2012Donnelly CorporationVehicular having a camera, a rain sensor and a single-ball interior electrochromic mirror assembly attached at an attachment element
US81420599 Nov 201127 Mar 2012Magna Electronics Inc.Automatic lighting system
US815441830 Mar 200910 Apr 2012Magna Mirrors Of America, Inc.Interior rearview mirror system
US816249330 Mar 201124 Apr 2012Donnelly CorporationInterior rearview mirror assembly for vehicle
US816481722 Oct 201024 Apr 2012Donnelly CorporationMethod of forming a mirrored bent cut glass shape for vehicular exterior rearview mirror assembly
US81707486 Jan 20121 May 2012Donnelly CorporationVehicle information display system
US817737628 Oct 201115 May 2012Donnelly CorporationVehicular interior rearview mirror system
US817923613 Apr 201015 May 2012Donnelly CorporationVideo mirror system suitable for use in a vehicle
US817958624 Feb 201115 May 2012Donnelly CorporationRearview mirror assembly for vehicle
US818987131 Jan 201129 May 2012Donnelly CorporationVision system for vehicle
US81941339 May 20085 Jun 2012Donnelly CorporationVehicular video mirror system
US821783028 Jul 201110 Jul 2012Magna Electronics Inc.Forward facing sensing system for a vehicle
US822858810 Dec 201024 Jul 2012Donnelly CorporationInterior rearview mirror information display system for a vehicle
US826755920 Jan 201218 Sep 2012Donnelly CorporationInterior rearview mirror assembly for a vehicle
US827118717 Feb 201218 Sep 2012Donnelly CorporationVehicular video mirror system
US82770597 Oct 20102 Oct 2012Donnelly CorporationVehicular electrochromic interior rearview mirror assembly
US828222618 Oct 20109 Oct 2012Donnelly CorporationInterior rearview mirror system
US828225322 Dec 20119 Oct 2012Donnelly CorporationMirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US82887112 Mar 201216 Oct 2012Donnelly CorporationInterior rearview mirror system with forwardly-viewing camera and a control
US82946083 Jul 201223 Oct 2012Magna Electronics, Inc.Forward facing sensing system for vehicle
US829497511 Jan 201023 Oct 2012Donnelly CorporationAutomotive rearview mirror assembly
US830471120 Jan 20126 Nov 2012Donnelly CorporationVehicle rearview mirror system
US830990713 Apr 201013 Nov 2012Donnelly CorporationAccessory system suitable for use in a vehicle and accommodating a rain sensor
US83250286 Jan 20124 Dec 2012Donnelly CorporationInterior rearview mirror system
US832505528 Oct 20114 Dec 2012Donnelly CorporationMirror assembly for vehicle
US832598622 Dec 20114 Dec 2012Donnelly CorporationImaging system for vehicle
US833503228 Dec 201018 Dec 2012Donnelly CorporationReflective mirror assembly
US835583924 Apr 201215 Jan 2013Donnelly CorporationVehicle vision system with night vision function
US836288519 Oct 201129 Jan 2013Donnelly CorporationVehicular rearview mirror system
US837659517 May 201019 Feb 2013Magna Electronics, Inc.Automatic headlamp control
US837928914 May 201219 Feb 2013Donnelly CorporationRearview mirror assembly for vehicle
US840070423 Jul 201219 Mar 2013Donnelly CorporationInterior rearview mirror system for a vehicle
US840572518 Feb 201026 Mar 2013Donnelly CorporationVehicular video processor module
US842728821 Oct 201123 Apr 2013Donnelly CorporationRear vision system for a vehicle
US84464703 Oct 200821 May 2013Magna Electronics, Inc.Combined RGB and IR imaging sensor
US845110711 Sep 200828 May 2013Magna Electronics, Inc.Imaging system for vehicle
US84622041 Jul 200911 Jun 2013Donnelly CorporationVehicular vision system
US846516214 May 201218 Jun 2013Donnelly CorporationVehicular interior rearview mirror system
US84651638 Oct 201218 Jun 2013Donnelly CorporationInterior rearview mirror system
US848343925 May 20129 Jul 2013Donnelly CorporationVision system for vehicle
US850306227 Aug 20126 Aug 2013Donnelly CorporationRearview mirror element assembly for vehicle
US85060961 Oct 201213 Aug 2013Donnelly CorporationVariable reflectance mirror reflective element for exterior mirror assembly
US850838326 Mar 201213 Aug 2013Magna Mirrors of America, IncInterior rearview mirror system
US850838430 Nov 201213 Aug 2013Donnelly CorporationRearview mirror assembly for vehicle
US851184113 Jan 201120 Aug 2013Donnelly CorporationVehicular blind spot indicator mirror
US852570317 Mar 20113 Sep 2013Donnelly CorporationInterior rearview mirror system
US854333017 Sep 201224 Sep 2013Donnelly CorporationDriver assist system for vehicle
US855909320 Apr 201215 Oct 2013Donnelly CorporationElectrochromic mirror reflective element for vehicular rearview mirror assembly
US857754914 Jan 20135 Nov 2013Donnelly CorporationInformation display system for a vehicle
US859352130 Nov 201226 Nov 2013Magna Electronics Inc.Imaging system for vehicle
US859900119 Nov 20123 Dec 2013Magna Electronics Inc.Vehicular vision system
US860832717 Jun 201317 Dec 2013Donnelly CorporationAutomatic compass system for vehicle
US861099222 Oct 201217 Dec 2013Donnelly CorporationVariable transmission window
US861464022 Oct 201224 Dec 2013Magna Electronics Inc.Forward facing sensing system for vehicle
US862976818 Jun 201214 Jan 2014Donnelly CorporationVehicle vision system
US86363936 May 201328 Jan 2014Magna Electronics Inc.Driver assistance system for vehicle
US86378018 Jul 201328 Jan 2014Magna Electronics Inc.Driver assistance system for a vehicle
US864372413 Mar 20134 Feb 2014Magna Electronics Inc.Multi-camera vision system for a vehicle
US86539592 Dec 201118 Feb 2014Donnelly CorporationVideo mirror system for a vehicle
US86544335 Aug 201318 Feb 2014Magna Mirrors Of America, Inc.Rearview mirror assembly for vehicle
US866507915 Oct 20124 Mar 2014Magna Electronics Inc.Vision system for vehicle
US867649123 Sep 201318 Mar 2014Magna Electronics Inc.Driver assist system for vehicle
US868684025 Jan 20131 Apr 2014Magna Electronics Inc.Accessory system for a vehicle
US870516114 Feb 201322 Apr 2014Donnelly CorporationMethod of manufacturing a reflective element for a vehicular rearview mirror assembly
US872754712 Aug 201320 May 2014Donnelly CorporationVariable reflectance mirror reflective element for exterior mirror assembly
US87799107 Nov 201115 Jul 2014Donnelly CorporationInterior rearview mirror system
US879762717 Dec 20125 Aug 2014Donnelly CorporationExterior rearview mirror assembly
US881440122 Mar 201226 Aug 2014Magna Electronics Inc.Vehicular vision system
US881804218 Nov 201326 Aug 2014Magna Electronics Inc.Driver assistance system for vehicle
US88339878 Oct 201216 Sep 2014Donnelly CorporationMirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US884217615 Jan 201023 Sep 2014Donnelly CorporationAutomatic vehicle exterior light control
US887431727 Jul 201028 Oct 2014Magna Electronics Inc.Parking assist system
US888478830 Aug 201311 Nov 2014Donnelly CorporationAutomotive communication system
US88864014 Nov 201311 Nov 2014Donnelly CorporationDriver assistance system for a vehicle
US88909559 Feb 201118 Nov 2014Magna Mirrors Of America, Inc.Adaptable wireless vehicle vision system based on wireless communication error
US89080394 Jun 20129 Dec 2014Donnelly CorporationVehicular video mirror system
US890804017 May 20139 Dec 2014Magna Electronics Inc.Imaging system for vehicle
US89171692 Dec 201323 Dec 2014Magna Electronics Inc.Vehicular vision system
US891743716 Jul 201323 Dec 2014Magna Mirrors Of America, Inc.Mirror assembly with formed reflective element substrate
US89770088 Jul 201310 Mar 2015Donnelly CorporationDriver assistance system for vehicle
US899395116 Jul 201331 Mar 2015Magna Electronics Inc.Driver assistance system for a vehicle
US900836925 Aug 201414 Apr 2015Magna Electronics Inc.Vision system for vehicle
US901490423 Sep 201321 Apr 2015Magna Electronics Inc.Driver assistance system for vehicle
US901496614 Mar 201421 Apr 2015Magna Electronics Inc.Driver assist system for vehicle
US901857725 Feb 201328 Apr 2015Magna Electronics Inc.Vehicular imaging system with camera misalignment correction and capturing image data at different resolution levels dependent on distance to object in field of view
US901909017 Mar 200928 Apr 2015Magna Electronics Inc.Vision system for vehicle
US901909117 Mar 201128 Apr 2015Donnelly CorporationInterior rearview mirror system
US904180631 Aug 201026 May 2015Magna Electronics Inc.Imaging and display system for vehicle
US904509115 Sep 20142 Jun 2015Donnelly CorporationMirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US90734914 Aug 20147 Jul 2015Donnelly CorporationExterior rearview mirror assembly
US908526125 Jan 201221 Jul 2015Magna Electronics Inc.Rear vision system with trailer angle detection
US909021119 May 201428 Jul 2015Donnelly CorporationVariable reflectance mirror reflective element for exterior mirror assembly
US91171235 Jul 201125 Aug 2015Magna Electronics Inc.Vehicular rear view camera display system with lifecheck function
US912652525 Feb 20108 Sep 2015Magna Electronics Inc.Alert system for vehicle
US913112015 May 20138 Sep 2015Magna Electronics Inc.Multi-camera vision system for a vehicle
US914078916 Dec 201322 Sep 2015Magna Electronics Inc.Forward facing sensing system for vehicle
US914689825 Oct 201229 Sep 2015Magna Electronics Inc.Driver assist system with algorithm switching
US91712173 Mar 201427 Oct 2015Magna Electronics Inc.Vision system for vehicle
US918702814 Feb 201317 Nov 2015Magna Electronics Inc.Driver assistance system for vehicle
US919157413 Mar 201317 Nov 2015Magna Electronics Inc.Vehicular vision system
US91916343 Apr 201517 Nov 2015Magna Electronics Inc.Vision system for vehicle
US919330320 Apr 201524 Nov 2015Magna Electronics Inc.Driver assistance system for vehicle
US919494311 Apr 201224 Nov 2015Magna Electronics Inc.Step filter for estimating distance in a time-of-flight ranging system
US92213997 Nov 201429 Dec 2015Magna Mirrors Of America, Inc.Automotive communication system
US924416521 Sep 201526 Jan 2016Magna Electronics Inc.Forward facing sensing system for vehicle
US924544817 Jun 201326 Jan 2016Magna Electronics Inc.Driver assistance system for a vehicle
US926467221 Dec 201116 Feb 2016Magna Mirrors Of America, Inc.Vision display system for vehicle
US927865420 Apr 20128 Mar 2016Donnelly CorporationInterior rearview mirror system for vehicle
US93151513 Apr 201519 Apr 2016Magna Electronics Inc.Driver assist system for vehicle
US933541125 Jan 201610 May 2016Magna Electronics Inc.Forward facing sensing system for vehicle
US934191427 Jul 201517 May 2016Donnelly CorporationVariable reflectance mirror reflective element for exterior mirror assembly
US935262317 Feb 201431 May 2016Magna Electronics Inc.Trailer hitching aid system for vehicle
US937606016 Nov 201528 Jun 2016Magna Electronics Inc.Driver assist system for vehicle
US937606123 Apr 201528 Jun 2016Donnelly CorporationAccessory system of a vehicle
US942819216 Nov 201530 Aug 2016Magna Electronics Inc.Vision system for vehicle
US943688013 Jan 20146 Sep 2016Magna Electronics Inc.Vehicle vision system
US944053527 Jan 201413 Sep 2016Magna Electronics Inc.Vision system for vehicle
US944671325 Sep 201320 Sep 2016Magna Electronics Inc.Trailer angle detection system
US945771727 Oct 20144 Oct 2016Magna Electronics Inc.Parking assist system
US946374418 Jan 201611 Oct 2016Magna Electronics Inc.Driver assistance system for a vehicle
US946925012 Feb 201618 Oct 2016Magna Electronics Inc.Vision display system for vehicle
US948130616 Dec 20151 Nov 2016Donnelly CorporationAutomotive communication system
US948714316 Dec 20148 Nov 2016Magna Mirrors Of America, Inc.Mirror assembly with formed reflective element substrate
US948714414 Oct 20098 Nov 2016Magna Mirrors Of America, Inc.Interior mirror assembly with display
US949587627 Jul 201015 Nov 2016Magna Electronics Inc.Vehicular camera with on-board microcontroller
US95070219 May 201629 Nov 2016Magna Electronics Inc.Forward facing sensing system for vehicle
US95080145 May 201429 Nov 2016Magna Electronics Inc.Vehicular multi-camera vision system
US95458836 Jul 201517 Jan 2017Donnelly CorporationExterior rearview mirror assembly
US955580316 May 201631 Jan 2017Magna Electronics Inc.Driver assistance system for vehicle
US955758412 Aug 201331 Jan 2017Donnelly CorporationRearview mirror assembly for vehicle
US955840911 Dec 201331 Jan 2017Magna Electronics Inc.Vehicle vision system with trailer angle detection
US959801417 Oct 201621 Mar 2017Magna Electronics Inc.Vision display system for vehicle
US960928929 Aug 201628 Mar 2017Magna Electronics Inc.Vision system for vehicle
US964360526 Oct 20159 May 2017Magna Electronics Inc.Vision system for vehicle
US965660813 Jun 201623 May 2017Magna Electronics Inc.Driver assist system for vehicle
US969474923 May 20164 Jul 2017Magna Electronics Inc.Trailer hitching aid system for vehicle
US96947531 Jun 20154 Jul 2017Magna Mirrors Of America, Inc.Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US973165316 Mar 201715 Aug 2017Magna Electronics Inc.Vision display system for vehicle
US973643520 Mar 201715 Aug 2017Magna Electronics Inc.Vision system for vehicle
US975810230 Jun 201712 Sep 2017Magna Mirrors Of America, Inc.Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US976938128 Nov 201619 Sep 2017Magna Electronics Inc.Vehicular multi-camera vision system
US977931324 Jan 20173 Oct 2017Magna Electronics Inc.Vehicle vision system with trailer angle detection
US97831145 Dec 201410 Oct 2017Donnelly CorporationVehicular video mirror system
US978311524 Jan 201710 Oct 2017Donnelly CorporationRearview mirror assembly for vehicle
US978312531 Mar 201410 Oct 2017Magna Electronics Inc.Accessory system for a vehicle
US978982122 May 201517 Oct 2017Magna Electronics Inc.Imaging and display system for vehicle
US979633224 May 201324 Oct 2017Magna Electronics Inc.Imaging system for vehicle
US980254219 Sep 201631 Oct 2017Magna Electronics Inc.Trailer angle detection system calibration
US980916818 Apr 20167 Nov 2017Magna Electronics Inc.Driver assist system for vehicle
US980917123 Apr 20157 Nov 2017Magna Electronics Inc.Vision system for vehicle
US98154098 May 201414 Nov 2017Magna Mirrors Of America, Inc.Rearview vision system for vehicle
US20020159270 *22 Jan 200231 Oct 2002Lynam Niall R.Vehicular lighting system
US20030025793 *31 Jul 20026 Feb 2003Mcmahon Martha A.Video processor module for use in a vehicular video system
US20030043480 *22 Aug 20026 Mar 2003Burgner Lori L.Vehicle information display
US20040032321 *18 Apr 200319 Feb 2004Mcmahon Martha A.Vehicle imaging system
US20050232469 *14 Apr 200520 Oct 2005Kenneth SchofieldImaging system for vehicle
US20070109807 *17 Jan 200717 May 2007Donnelly CorporationLighting system for a vehicle
US20100188508 *18 Feb 201029 Jul 2010Donnelly CorporationVehicular video system
US20100266326 *21 Apr 200921 Oct 2010Chuang Cheng-HuaMark-erasable pen cap
CN103935299A *6 May 201423 Jul 2014刘芬芬Reflector
Classifications
U.S. Classification359/571, 359/871, 359/838
International ClassificationB60R1/10
Cooperative ClassificationB60R1/10
European ClassificationB60R1/10
Legal Events
DateCodeEventDescription
29 Aug 1997ASAssignment
Owner name: DONNELLY CORPORATION, MICHIGAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOS, BRENT J.;REEL/FRAME:008700/0204
Effective date: 19970829
16 Sep 2002FPAYFee payment
Year of fee payment: 4
27 Nov 2006FPAYFee payment
Year of fee payment: 8
24 Jan 2011REMIMaintenance fee reminder mailed
22 Jun 2011LAPSLapse for failure to pay maintenance fees
9 Aug 2011FPExpired due to failure to pay maintenance fee
Effective date: 20110622